Table 7.

Main and interaction effect of Scenarios, soil depth, growth stages and year for available Nitrogen (N), Phosphorus (P) and Potassium (K).

Main effects	Available N	Available P	Available K
Scenario (S)	**	**	**
Depth (D)	**	**	**
Growth stage (GS)	**	**	**
Year (Y)	**	**	**
Interaction effects
GS × S	NS	NS	NS
S × Y	NS	NS	**
GS × Y	NS	NS	NS

**indicates significant at 5 % level of significance (p < 0.05).